Unlike many Old Testament prophecies delivered directly to Israel or surrounding nations, the book of Jonah's central prophetic message primarily focused on:

A Warning the Israelites of impending invasion by the Assyrians if they did not repent. B Calling for repentance and averting divine judgment against the large, pagan city of Nineveh. C Predicting the rise and fall of the Babylonian Empire and its impact on Israelite exiles. D Announcing the coming of a great king from the line of David who would deliver Israel from oppression.